I love using this plugin on my overheads. The saturation it gives cymbals and snare pop is amazing. The downside is if you're not running something with above average processing power then it can cause some serious lagging .
Again, Voxengo offers a free product that not only performs like similar paid products, but surpasses them. Get this plugin, learn how to use it correctly, and listen to your mixes get better almost instantly.